Answer:
c on edg
Explanation:
i dont know for sure so sorry if i am wrong.
and have a good day <3
20 points!! Please help ASAP!
Determine the molarity (M) of a solution that is made by dissolving 0.35 moles NaCl in water in order
to make 500 mL of solution. *For Molarity problems, convert mL to L
Answer:
78 ml
Explanation:
calcium phosphate consists of two ions chemically bonded together. What are charges of each ion?
Answer: Ca^2+ and P^3-
Explanation:
Which region on the map has the highest risk of future landslides? a- Region 1 b-Region 2 c- Region 3 d- there is no way to make comparisons about the risk of future landslides? The subject is science (8th grade)
Answer:
Explanation:
Which region on the map has the lowest risk of future landslides?
I just need 4-8! Plz hurry!!!!!!!!!!!
Answer:
4: 90N
5: 7.77777m/s
6: 4
7: 12.5609756098
8: 187.5
Explanation:
Complete and balance the equation. Show your work on paper and submit a screenshot to
Canvas.
N_20_5
A. Not possible
B. 2, 2,5
C. 2,5,2
D. 2,2,4
Answer:
A
Explanation:
because need more number to complete the balance equation
El etanol combustiona con el oxigeno produciendo dióxido de carbono gaseoso y agua: En un proceso se hacen reaccionar 450.2 g de dioxígeno con 998. 2 g de etanol . a) ¿Cuál de los reactivos es el limitante? b) Calcule la masa de dióxido de carbono que se formará c) ¿ Cuanto del reactivo en exceso quedará sin reaccionar?
Answer:
uh oh stinky uh oh stinky
what is the mass number for an atom that has 36 protons 36 electrons and 40 neutrons
Answer:
76
Explanation:
Mass number = number of protons plus the number of neutrons
So, 36 + 40 = 76
The following diagram shows a single cell. Is the cell eukaryotic or prokaryotic? Explain your reasoning
Answer:
eukaryotic because it has a nucleus
Explanation:
4. Explain how radioactive isotopes are used to detect health problems.
help?? help for mee??? maybe? what if i said...please????
Answer:
c
Explanation:
because they transfer an electron the sodium ion has a positive charge, and the chlorine ion has a negative charge so one gives off positive and one gives of negative
all about Henry Mosléy?
Answer:
Henry Moseley was an English physicist whose contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number.
How are a rainforest and a desert different?
Answer:
Difference between Desert Plants and Rainforest Plants. The deserts are very dry land areas that can be hot or cold and experience very less rainfall. On the other hand, rainforests receive an enormous amount of rain. Both are homes to a variety of plants.
Explanation:
Why should we work to protect estuaries? Select all that apply.
PLSSSS
Answer:
1, 3, and 4
Explanation:
I'm guessing, but those make the most sense
Answer:
3 and 4
Explanation:
Waste water from nuclear power plants is generally ?
☁️ Answer ☁️
Waste water from nuclear power plants is generally: radioactive.
Hope it helps.
Have a nice day noona/hyung
Please help me figure this question out I’ll mark you brainiest. The balanced equation would be 2Na + 2Cl = 2NaCl. Hope that helps ya solve it.
Answer:
I think c.............
Which of these do NOT show malleability a) Iron
b) Sulfur
c) Copper
d) Aluminum
Answer:Sulfur
Hope this helps!
Explanation:
Aliyah found a tarnished silver dollar and recalled that tarnish results when metals react with oxygen or sulfur compounds in the air. She polished the silver dollar to remove the tarnish until it was shiny again. She also polished a copper bracelet and a gold ring. What physical property of these metals makes them shiny?
A. conductivity
B. ductility
C. luster
D. malleability
Answer:
C.
Explanation:
Luster
what is the lewis dot structure for ClF (chlorine monofluoride)?
Answer:
Explanation:
.
Because the triple beam balance is zeroed before it is put into use, it measures
A.
volume
B.
weight
C.
the effects of gravity
D.
mass
1. This balanced equation represents a chemical reaction.
2C4H10+ 1302
8CO2 + 10H2O
What type of chemical reaction is represented by the equation?
A. Double replacement
B. Combustion
C. Single replacement
D. Synthesis (combination)
Answer:
combustion is the answer
True or false?
A limitinh factor is an environmental factor that increases the growth of a population
True or false?
Biomes are characterized by temperature, precipitation, and the plant and animal communities that live there
Benzoic acid, HC6H5CO2,is a monoprotic acid(only one H+ ionizes)with a Ka=6.5×10^-5. Calculate [H+] and the pH of a .32M solution of benzoic acid. PLEASE ANSWER.
Answer:
[H⁺] = 4.56x10⁻³ M
pH = 2.34
Explanation:
Hello there!
In this case, according to the ionization reaction of benzoic acid:
[tex]HC_6H_5CO_2+H_2O\rightleftharpoons C_6H_5CO_2^++H_3O^+[/tex]
Whereas [tex][H_3O^+]=[H^+][/tex], we can set up the equilibrium expression in terms of [tex]x[/tex] (reaction extent) to obtain:
[tex]Ka=\frac{[C_6H_5CO_2^-][H_3O^+]}{[HC_6H_5CO_2]} \\\\6.5x10^{-5}=\frac{x^2}{0.32-x}[/tex]
However, since Ka<<<1, we can neglect the [tex]x[/tex] on bottom to easily solve for it:
[tex]6.5x10^{-5}=\frac{x^2}{0.32}\\\\x=\sqrt{6.5x10^{-5}*0.32} \\\\x=4.56x10^{-3}[/tex]
Which is actually the same as [H⁺]. Finally, the pH turns out to be:
[tex]pH=-log(4.56x10^{-3})\\\\pH=2.34[/tex]
Best regards!
PLEASE PLEASE HELP THIS IS SCIENCE !!
ILL MARK U BRAINLIEST IF UR CORRECT
Answer:
Q 14 Deceleration
Explanation:
You are slowing down
Answer:
Explanation:
question 14 is a
question 15 is c
questoin 13 is d
what is the limiting reactant of 20.0 moles of o2 react with 30.0 moles of h2 according to the following reaction ? 2H2 + O2 = 2H2O
Answer:
The limiting reactant is hydrogen.
Explanation:
According to the balanced equation for synthesis of water, hydrogen is used up twice as fast as oxygen -- we need two moles of H2 for every one mole of O2 when creating water.
Since we have 20 moles of oxygen, this means we would need twice as much hydrogen, or 40 moles, to use it all up. There is only 30 moles of hydrogen, which means that all the hydrogen will be used before the 20 moles of oxygen is used. Hydrogen limits production in this case.
We have that
From the Question we are told that
20.0 moles of o_2
30.0 moles of h_2
Therefore
The ratio
For more information on this visit
Question 1
Calculate the pressure in a 12 Liter tank containing 2.52 moles of argon gas at 5°C?
a 8.2 atm
b 2.4 atm
с 0.3 atm
d 5 atm
PLEASE HELP
Answer:
D
Explanation:
Hannah made a diagram to show how plants make their own food. What should Hannah write to fill in the blank in the diagram?
A)
heat from the soil
B)
energy from the Sun
C)
heat from the roots
D)
energy from the wind
PLS SOME HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP I NEED HELPPPPPPPPPPP
Answer:
Answer: Energy from the sun.
Explanation:
If you look at the hints it says that it needs something else for a plant to grow and what does a plant need?
Air, Water, and energy from the Sun to make food
Hope this helps :)
Answer:
Energy from the sun
Explanation:
PLEASE HELP WITH CHEM !! Calculate the [OH-] of each of the following solutions given the [H+]. AND Classify each of the solutions in the question above as either acid, base, or neutral. AND FIND THE PH
pH, pOH, [H+], and [OH-] are all interrelated. For simplicity, we assume that we're working with aqueous solutions at 25 °C.
The following mathematical relations are relevant here:
pH = -log[H⁺]pOH = -log[OH⁻][H⁺] = 10^-pH[OH⁻] = 10^-pOHpH + pOH = 14[H⁺] × [OH⁻] = 10^-14A pH of 7 is neutral; a pH less than 7 is acidic; and a pH greater than 7 is basic.
---
We are given four solutions of varying [H⁺], and we want to find the pH and the [OH⁻]. The pH will tell us whether the solution is neutral, an acid, or a base.
Finding the [OH⁻]Using the relationship [H⁺] × [OH⁻] = 10^-14, we can calculate the [OH⁻] of each solution by dividing 10^-14 by the given [H⁺]:
[OH⁻] = 10^-14/(3.3 × 10^-5) = 3.0 × 10^-10
[OH⁻] = 10^-14/(4.0 × 10^-8) = 2.5 × 10^-7
[OH⁻] = 10^-14/(7.2 × 10^-11) = 1.4 × 10^-4
[OH⁻] = 10^-14/(8.2 × 10^-4) = 1.2 × 10^-11
Note: While not indicated here, the units for [H⁺] and [OH⁻] are moles/liter (M).
Finding the pHTo find the pH of each solution, we take the negative logarithm of the [H⁺] with base 10, i.e., pH = -log₁₀[H⁺]:
pH = -log(3.3 × 10^-5) = 4.48
pH = -log(4.0 × 10^-8) = 7.40
pH = -log(7.2 × 10^-11) = 10.14
pH = -log(8.2 × 10^-4) = 3.09
Note that, for significant figures involving logarithms, the number of decimal places should equal the number of significant figures in the argument of our logarithm (the argument is what we're taking the -log of). Since we're taking the -log of quantities given to two significant figures, our corresponding pH values are given to two decimal places.
Acid, Base, or Neutral?As mentioned above, a pH = 7 is neutral, a pH < 7 is acidic, and a pH > 7 is basic.
4.48 < 7, so the first solution is an acid.
7.40 > 7, so the second solution is a base.
10.14 > 7, so the third solution is a base.
3.09 < 7, so the fourth solution is an acid.
Perform the following operation
and express the answer in
scientific notation.
3.60x10-12 + 3.60x10-11
Answer:
3.60X10^-12 is equal to 0.360X10^-11 (move decimal one place left)
Now you can add 3.60X10^-11 and 0.360X10^-11:
3.60X10^-11 + 0.360X10^-11 = 3.96X10^-11
You're really just adding 3.60 to 0.36 since the "X10^-11" is the same for both.
If the solubility of sugar is 204/100 mL, how much water will be required to saturate a solution that contains 1608g of sugar?
What type of chemical reaction is demonstrated by this equation? A+BX-AX+B
Answer:
d an acid - base reaction.
Explanation:
Answer:
single replacement
Explanation:Look it up and got it from quizlet it should be right.